Please be advidsed that there is not threat to public safety. Three additional suspects have been taken into custody in connection to the attack on the Boston Marathon. Aside from the aforementioned, there is no additional info to release at this time. Additional details will be provided when they become available. No info available at this time relative to a press conference.

Possible obstruction of justice charges for two suspects:

Sources tell @briantoddcnn two students are going to be charged with obstruction of justice connected to #Boston bombing.

More from Boston.com on two men allegedly connected to the Tsarnaev brothers who are in custody for immigration violations:

Two Kazakh men associated with the alleged Boston Marathon bombers went before a federal immigration judge this morning on allegations they violated their student visas.

The men were detained for civil immigration violations after authorities questioned them about their possible connection to Tamerlan and Dzhokhar Tsarnaev, who allegedly detonated two bombs at the Boston Marathon last month, killing three people and injuring more than 200. The brothers also allegedly murdered MIT Police Officer Sean Collier.

The two men, Dias Kadyrbayev and Azamat Tazhayakov, came to America from the Central Asian nation to study at the University of Massachusetts at Dartmouth, where Dzhokhar Tsarnaev was also enrolled.